Information card for entry 4505342

Structure parameters

• Common name: Metformin HCl form I
• Chemical name: N,N-Dimethylimidodicarbonimidic diamide hydrochloride
• Formula: C4 H12 Cl N5
• Calculated formula: C4 H12 Cl N5
• SMILES: [Cl-].C(=NC(=[NH2+])N(C)C)(N)N
• Title of publication: A Metastable Polymorph of Metformin Hydrochloride: Isolation and Characterization Using Capillary Crystallization and Thermal Microscopy Techniques
• Authors of publication: Childs, Scott L.; Chyall, Leonard J.; Dunlap, Jeanette T.; Coates, David A.; Stahly, Barbara C.; Stahly, G. Patrick
• Journal of publication: Crystal Growth & Design
• Year of publication: 2004
• Journal volume: 4
• Journal issue: 3
• Pages of publication: 441
• a: 7.9231 ± 0.0012 Å
• b: 13.894 ± 0.002 Å
• c: 7.9231 ± 0.0012 Å
• α: 90°
• β: 114.48°
• γ: 90°
• Cell volume: 793.8 ± 0.2 ų
• Cell temperature: 100 ± 2 K
• Ambient diffraction temperature: 100 ± 2 K
• Number of distinct elements: 4
• Space group number: 14
• Hermann-Mauguin space group symbol: P 1 21/c 1
• Hall space group symbol: -P 2ybc
• Residual factor for all reflections: 0.0445
• Residual factor for significantly intense reflections: 0.0354
• Weighted residual factors for significantly intense reflections: 0.0763
• Weighted residual factors for all reflections included in the refinement: 0.0781
• Goodness-of-fit parameter for all reflections included in the refinement: 1.078
• Diffraction radiation wavelength: 0.71073 Å
• Diffraction radiation type: MoKα
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No